<div class="nav">
    <ng-container *ngFor="let item of navigation">
        <notadd-nav-group *ngIf="item.type=='group'" [item]="item"></notadd-nav-group>
        <notadd-nav-collapse *ngIf="item.type=='collapse'" [item]="item"></notadd-nav-collapse>
        <notadd-nav-item *ngIf="item.type=='item'" [item]="item"></notadd-nav-item>
    </ng-container>
</div>
